浅析延安黄土丘陵沟壑区水文地质特征
摘要:延安市城区位于黄土丘陵沟壑区的河谷区域，地势平坦而狭长的河谷地带已不能满足城市发展的需要，城市建设不得不向周边的黄土丘陵沟壑区扩展。在黄土丘陵沟壑区进行工程建设必然会进行“削坡填沟”或“削峁填沟”造地，而该区水文地质条件较为复杂，大规模的“削坡填沟”或“削峁填沟”造地工程面临众多的因地下水引起的岩土工程问题。通过对延安市区周边丘陵沟壑区的水文地质调查、钻探及试验，总结分析了延安黄土丘陵沟壑区地下水类型、地层的渗透特征、各地貌特征下的水文地质结构、地下水的含水系统及补给径流与排泄特征，构建了延安黄土丘陵沟壑区的水文地质概念模型。其成果可为延安黄土丘陵沟壑区及类似地质条件下的“削坡填沟”或“削峁填沟”造地工程提供参考。
Abstract:The urban area of Yan'an is located in the valley area of the loess hilly and gully region.The flat and narrow valley zone cannot meet the needs of the urban development,therefore,it is necessary to expand the urban construction to the surrounding loess hilly and gully areas.In the loess hilly and gully area,the construction of the project is bound to be “cutting slope and filling the ditch” or “cutting the gully and filling the ditch”.However,the hydrogeological conditions of this area are relatively complex.The large-scale construction projects, “cutting slope filling ditch” or “cutting the gully and filling the ditch”,are facing with many geotechnical engineering problems caused by the groundwater.The groundwater types,the permeability characteristics of the strata,the hydrogeological structure under the features of various geomorphology,the water bearing systemof groundwater and the runoff and excretion characteristics are summarized and analyzed based on the hydrogeological survey,drilling and test in the loess hilly and gully region of Yan'an.Also,the hydrogeological conceptual model of the loess hilly and gully area is constructed.The results can provide a reference for the “slope cutting and trench filling” or “trench cutting and trench filling” projects in the loess hilly and gully area of Yan'an and similar geological conditions.
中文标题：
浅析延安黄土丘陵沟壑区水文地质特征
Hydrogeology Features of Loess Hilly Gully Region in Yan'an
作者：
蔡怀恩,张继文,郑建国,张瑞松,梁小龙
Cai Huaien,Zhang Jiwen,Zheng Jianguo,Zhang Ruisong,Liang Xiaolong
作者简介:蔡怀恩，男，1981年生，甘肃庆阳人，硕士研究生，高级工程师，主要从事工程地质、水文地质、地质灾害方面的研究。E-mail：46578650@qq.com
通讯地址：
机械工业勘察设计研究院有限公司, 陕西西安 710043
ChinaJikanResearchInstituteofEngineeringInvestigationsandDesignCo.,Ltd.,Xi'an710043,Shaanxi,China
中图分类号:P641.6
doi:10.3969/j.issn.1007-2993.2019.05.009
出版物：岩土工程技术
收稿日期:2019-04-16
网络出版日期:2021-07-06
关键词:延安,黄土丘陵沟壑,水文地质结构,含水系统
Key words:Yan'an,loess hilly gully region,hydrogeological structure,groundwater system
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基金项目：
基金项目: 国家重点研发计项目(2017YFD0800501)；陕西省科技统筹创新工程项目(2016KTZDSF03-02)
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